增加G90G91批量fixture验证

结论：新增 modal_incremental fixture，覆盖 G90/G91 距离模式切换、G1 模态继承和回到绝对模式；验证脚本改为批量执行所有 G-code fixture 并匹配 expected canonical events。检查：git diff --check 通过；wasm-port/tests/native/verify_native_probes.sh 通过。

wasm-port/tests/native/verify_native_probes.sh

@@ -3,7 +3,8 @@ set -euo pipefail
 
 ROOT_DIR="$(cd "$(dirname "$0")/../.." && pwd)"
 BUILD_DIR="$ROOT_DIR/build/native"
-EXPECTED_EVENTS="$ROOT_DIR/tests/fixtures/canon/minimal_linear.events"
+GCODE_FIXTURE_DIR="$ROOT_DIR/tests/fixtures/gcode"
+CANON_FIXTURE_DIR="$ROOT_DIR/tests/fixtures/canon"
 
 "$ROOT_DIR/tools/build_native_probes.sh"
 
@@ -33,16 +34,47 @@ check_exitcode linuxcnc_interp_minimal_harness
 check_exitcode linuxcnc_interp_minimal_harness.run
 check_exitcode linuxcnc_rs274_compile_probe
 
+check_fixture_output() {
+  local fixture="$1"
+  local expected="$2"
+  local stdout_file="$3"
+
+  grep -Fq "read=0" "$stdout_file"
+  grep -Fq "parse_line=0" "$stdout_file"
+
+  local line_count
+  line_count="$(grep -cv '^[[:space:]]*$' "$fixture")"
+  local line_number
+  for ((line_number = 1; line_number <= line_count; line_number += 1)); do
+    grep -Fq "execute_line_${line_number}=0" "$stdout_file"
+  done
+
+  while IFS= read -r expected_event; do
+    [[ -z "$expected_event" ]] && continue
+    grep -Fq "$expected_event" "$stdout_file"
+  done < "$expected"
+}
+
 RUN_STDOUT="$BUILD_DIR/linuxcnc_interp_minimal_harness.run.stdout.log"
+check_fixture_output \
+  "$GCODE_FIXTURE_DIR/minimal_linear.ngc" \
+  "$CANON_FIXTURE_DIR/minimal_linear.events" \
+  "$RUN_STDOUT"
 
-grep -Fq "read=0" "$RUN_STDOUT"
-grep -Fq "execute_line_1=0" "$RUN_STDOUT"
-grep -Fq "execute_line_2=0" "$RUN_STDOUT"
-grep -Fq "parse_line=0" "$RUN_STDOUT"
+for fixture in "$GCODE_FIXTURE_DIR"/*.ngc; do
+  name="$(basename "$fixture" .ngc)"
+  expected="$CANON_FIXTURE_DIR/$name.events"
+  if [[ ! -f "$expected" ]]; then
+    echo "missing expected canon fixture: $expected" >&2
+    exit 1
+  fi
 
-while IFS= read -r expected_event; do
-  [[ -z "$expected_event" ]] && continue
-  grep -Fq "$expected_event" "$RUN_STDOUT"
-done < "$EXPECTED_EVENTS"
+  stdout_file="$BUILD_DIR/linuxcnc_interp_minimal_harness.$name.stdout.log"
+  stderr_file="$BUILD_DIR/linuxcnc_interp_minimal_harness.$name.stderr.log"
+  "$BUILD_DIR/linuxcnc_interp_minimal_harness" "$fixture" \
+    >"$stdout_file" \
+    2>"$stderr_file"
+  check_fixture_output "$fixture" "$expected" "$stdout_file"
+done
 
 echo "native probe validation complete"